This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A158606 #9 Apr 05 2019 05:42:53
%S A158606 6,3,9,2,5,8,1,4,7,0,3,6,2,9,5,8,4,1,0,7,3,6,2,9,5,8,1,4,0,7,3,6,9,2,
%T A158606 5,8,4,1,7,0,6,3,9,2,5,8,4,1,7,3,0,6,2,9,5,8,1,4,0,7,3,6,9,2,5,8,4,1,
%U A158606 7,0,6,3,9,2,5,1,8,4,0,7,3,6,2,9,5,4,8,1,0,7,3,9,6,2,5,8,4,7,1,0,6,3,9,2,5
%N A158606 Last digit of A158605(n).
%C A158606 The sequence is much more irregular than suggested by a naive investigation of the first few blocks of 10 digits each.
%p A158606 read("transforms3") : L := BFILETOLIST("b064413.txt") : L13 := [] : for i from 1 to nops(L) do if op(i,L) mod 13 = 0 then L13 := [op(L13),op(i,L) mod 10 ] ; fi; od: op(1..120,L13) ; # _R. J. Mathar_, Sep 07 2009
%Y A158606 Cf. A010879 (final digit), A158605.
%K A158606 nonn,base
%O A158606 1,1
%A A158606 _Paul Curtz_, Mar 22 2009
%E A158606 Edited and extended by _R. J. Mathar_, Sep 07 2009